net/sched/sch_teql.c
Source file repositories/reference/linux-study-clean/net/sched/sch_teql.c
File Facts
- System
- Linux kernel
- Corpus path
net/sched/sch_teql.c- Extension
.c- Size
- 12202 bytes
- Lines
- 530
- Domain
- Networking Core
- Bucket
- Sockets, Protocols, Packet Path, And Network Policy
- Inferred role
- Networking Core: operation-table or driver-model contract
- Status
- pattern implementation candidate
Why This File Exists
Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.
- Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.
- Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
- Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
- Touches IRQ or DMA behavior; this matters for the representative real-device path.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/module.hlinux/types.hlinux/kernel.hlinux/slab.hlinux/string.hlinux/errno.hlinux/if_arp.hlinux/netdevice.hlinux/init.hlinux/skbuff.hlinux/moduleparam.hnet/dst.hnet/neighbour.hnet/pkt_sched.h
Detected Declarations
struct teql_masterstruct teql_sched_datafunction teql_enqueuefunction teql_dequeuefunction teql_peekfunction teql_resetfunction teql_destroyfunction teql_qdisc_initfunction __teql_resolvefunction teql_resolvefunction teql_master_xmitfunction teql_master_openfunction teql_master_closefunction teql_master_stats64function teql_master_mtufunction teql_master_setupfunction teql_initfunction teql_exitfunction list_for_each_entry_safemodule init teql_init
Annotated Snippet
static const struct net_device_ops teql_netdev_ops = {
.ndo_open = teql_master_open,
.ndo_stop = teql_master_close,
.ndo_start_xmit = teql_master_xmit,
.ndo_get_stats64 = teql_master_stats64,
.ndo_change_mtu = teql_master_mtu,
};
static __init void teql_master_setup(struct net_device *dev)
{
struct teql_master *master = netdev_priv(dev);
struct Qdisc_ops *ops = &master->qops;
master->dev = dev;
ops->priv_size = sizeof(struct teql_sched_data);
ops->enqueue = teql_enqueue;
ops->dequeue = teql_dequeue;
ops->peek = teql_peek;
ops->init = teql_qdisc_init;
ops->reset = teql_reset;
ops->destroy = teql_destroy;
ops->owner = THIS_MODULE;
dev->netdev_ops = &teql_netdev_ops;
dev->type = ARPHRD_VOID;
dev->mtu = 1500;
dev->min_mtu = 68;
dev->max_mtu = 65535;
dev->tx_queue_len = 100;
dev->flags = IFF_NOARP;
dev->hard_header_len = LL_MAX_HEADER;
netif_keep_dst(dev);
}
static LIST_HEAD(master_dev_list);
static int max_equalizers = 1;
module_param(max_equalizers, int, 0);
MODULE_PARM_DESC(max_equalizers, "Max number of link equalizers");
static int __init teql_init(void)
{
int i;
int err = -ENODEV;
for (i = 0; i < max_equalizers; i++) {
struct net_device *dev;
struct teql_master *master;
dev = alloc_netdev(sizeof(struct teql_master), "teql%d",
NET_NAME_UNKNOWN, teql_master_setup);
if (!dev) {
err = -ENOMEM;
break;
}
if ((err = register_netdev(dev))) {
free_netdev(dev);
break;
}
master = netdev_priv(dev);
strscpy(master->qops.id, dev->name, IFNAMSIZ);
err = register_qdisc(&master->qops);
if (err) {
unregister_netdev(dev);
free_netdev(dev);
break;
}
list_add_tail(&master->master_list, &master_dev_list);
}
return i ? 0 : err;
}
static void __exit teql_exit(void)
{
struct teql_master *master, *nxt;
list_for_each_entry_safe(master, nxt, &master_dev_list, master_list) {
list_del(&master->master_list);
unregister_qdisc(&master->qops);
unregister_netdev(master->dev);
free_netdev(master->dev);
}
}
Annotation
- Immediate include surface: `linux/module.h`, `linux/types.h`, `linux/kernel.h`, `linux/slab.h`, `linux/string.h`, `linux/errno.h`, `linux/if_arp.h`, `linux/netdevice.h`.
- Detected declarations: `struct teql_master`, `struct teql_sched_data`, `function teql_enqueue`, `function teql_dequeue`, `function teql_peek`, `function teql_reset`, `function teql_destroy`, `function teql_qdisc_init`, `function __teql_resolve`, `function teql_resolve`.
- Atlas domain: Networking Core / Sockets, Protocols, Packet Path, And Network Policy.
- Implementation status: pattern implementation candidate.
- Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
- IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.